RE: [PATCH v2 3/3] efi: Add support for using efivars as a pstorebackend

[Luck, Tony]

> Mm. Given that the name of the source is in the file, there's no 
> namespacing issues. In an ideal world I think we'd register all of them 
> in order to provide a better chance of at least one of them ending up in 
> actual persistent storage.

It depends on your level of paranoia - and on what problems
you think might occur. In an ideal world all the back-ends
would work - and we'd just use one until it filled up, and
then move to the next.  in the real world one of the back-ends
might just randomly hang the system - converting a crashing
system into a hung system (which many people consider a more
severe problem). Giving a user an opt-out method for a back-end
looks good in that scenario.

-Tony
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